Answer:
440
Step-by-step explanation:
Calculation to determine the change in government spending needed to reach full employment.
At Y=6000,
C=300+0.64Y
C=300+0.64*6000
C=300+3840
C=4140
Second step
Imports=0.08*Y=0.08*6000
Imports=480
Aggregate expenditure=4140+800+700+400-480
Aggregate expenditure=5560
Full employment G=6000-5560
Full employment G=440
New G=700+440
New G=1140
Y=300+0.64Y+800+1140+400-0.08Y
Y=2640+0.56Y
Y=2640/0.44
Y=6000
Therefore the change in government spending needed to reach full employment must Increase by 440.